title: 1,3-dimethyl-8-oxoisoguanine, a new purine from the New Zealand ascidian Pseudodistoma cereum.
mesh_terms: D000818:Animals; D006147:Guanine / Q000031:analogs & derivatives / Q000737:chemistry* / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D014561:Urochordata / Q000737:chemistry*
chemical_list: C485299:1,3-dimethyl-8-oxoisoguanine; D006147:Guanine